App note: Overture series high power solutions

This application note (PDF) from TI discusses the different aspects of the Overture series high-power solutions, and discusses three application circuits: parallel, bridged, and bridged/parallel configurations The objective is to provide simple high-power solutions that are conservatively designed, highly reliable and have low part count. This document provides three specific, but not unique, application circuits […]

App note: IC temperature sensor accuracy compensation with a PIC microcontroller

This application note is based on the analog output MCP9700/MCP9701 and serial output MCP9800 temperature sensors. Link (PDF)  here Microchip Technology Inc. provides a number of analog and serial output Integrated Circuit (IC) temperature sensors. Typically, these sensors are accurate at room temperature within one degree Celsius (±1°C). However, at hot or cold temperature extremes, the […]

App note: Parallel crystal circuit input voltage control

This application note is intended for use with all SMSC LAN products incorporating a parallel crystal circuit. The information contained in this application note provides one option to control the voltage across the input of the crystal circuitry. Link here The designer should incorporate the series resistor shown below in his design to guarantee that the […]

App note: USB hardware design guide

An app note from Silicon Labs with design guidelines for implementing USB host and device applications using USB capable EFM32 microcontrollers. Link here. (PDF!) This document will explain how to connect the USB pins of an EFM32 microcontroller, and will give general guidelines on PCB design for USB applications. First some quick rules-of-thumb for routing […]

App note: Simple Switcher PCB layout guidelines

Simple Switcher PCB layout guidelines from Texas Instruments, app note here (PDF!) One problem with writing an application report on PCB layout is that the people who read it are usually not the ones who are going to use it. Even if the designer has struggled through electromagnetic fields, EMC, EMI, board parasitics, transmission line […]

App note: Bluetooth low energy digital pedometer demo design

An application note (PDF!) from Microchip: A Bluetooth low energy digital pedometer demo design A digital pedometer is a portable electronic device that counts each step a person takes by detecting the motion of the person’s body with an accelerometer. This application note demonstrates the implementation of a Bluetooth Low Energy Digital Pedometer using the Microchip PIC16LF1718, […]

App note: IR remote control transmitter

IR remote control transmitter application note (PDF!) from Microchip: This application note illustrates the use of the PIC10F206 to implement a two-button infrared remote controller. The PIC10F2XX family of microcontrollers is currently the smallest in the world, and their compact sizes and low cost make them preferable for small applications such as this one. Two […]

App note: Using the Configurable Logic Cell (CLC) to interface a PIC16F1509 and WS2811 LED driver

An application note (PDF!) from Microchip on how to use CLC to interface a PIC16F1509 and WS2811 LED driver: The Configurable Logic Cell (CLC) peripheral in the PIC16F1509 device is a powerful way to create custom interfaces that would otherwise be very difficult. One example is the single-wire PWM signal, used by the WS2811 LEDs, well known in […]

App note: Infrared remote control implementation with MSP430FR4xx

Infrared remote control implementation with MSP430FR4xx application note from TI: This application report provides an insight into several of the most frequently used infrared protocols and especially their flexible implementation using the TI MSP430FR4xx series of low-power microcontrollers. The MSP430FR4xx microcontrollers are primarily targeted at remote control application that are equipped with infrared modulation function […]

App note: Vibrating mesh nebulizer reference design

Vibrating mesh nebulizer reference design from Microchip, application here (PDF!) This application note demonstrates an implementation of driving a piezo mesh disk in a vibrating mesh nebulizer demo. The demo system features a Microchip 8-bit microcontroller-based piezo mesh disk driver board and a nebulizer plastic housing.

App note: Practical considerations of Trench MOSFET stability when operating in linear mode

Practical considerations of Trench MOSFET stability when operating in linear mode, application note (PDF!) from Fairchild Semiconductor This application note focuses on the factors affecting the thermal instability condition of a trench MOSFET device in Linear Mode. In particular, it studies the phenomenon when the drain current (Id) focusing process occurs that leads to a localized […]

App note: Between the Amplifier and the ADC – Managing filter loss in communications systems

An application note (PDF!) from TI on optimizing the filter design to minimize the losses: Filtering plays an essential part in nearly all communications systems. Removing unwanted signals is part of system design to eliminate unwanted noise or distortion. The signal presented to the analog to digital converter should have no spurs or distortion products, especially […]

App note: USB field firmware updates on MSP430 MCUs

TI’s application note: USB field firmware updates on MSP430 MCUs (PDF!) With the advent of USB, end users can perform firmware upgrades in the field by simply attaching the device via USB and executing an application on the host PC. Such an approach has numerous advantages: Problems discovered after product release can be fixed. Reduced […]

App note Quick-Start: Driving 14-segment displays with the MAX6954

Guidelines from Maxim on using the MAX6954 to drive 14-segment monocolor LEDs, app note here (PDF!): This article is how-to guide, intended as a quick learning aid for engineers considering using the MAX6954 to drive 14-segment monocolor LEDs. The MAX6954 is a versatile display driver, capable of controlling a mix of discrete, 7-segment, 14-segment, and 16-segment […]

App note: Crystal oscillator basics and crystal selection for rfPICTM and PICmicro devices

The basics of crystals and crystal oscillators application note from Microchip, link here (PDF!) This Application Note will not make you into an oscillator designer. It will only explain the operation of an oscillator in simplified terms in an effort to convey the concepts that make an oscillator work. The goal of this Application Note is […]

App note: Designing for board level electromagnetic compatibility

Designing for board level electromagnetic compatibility application note (PDF!) from NXP: Electromagnetic interference (EMI) is a major problem in modern electronic circuits. To overcome the interference, the designer has to either remove the source of the interference, or protect the circuit being affected. The ultimate goal is to have the circuit board operating as intended — to achieve electromagnetic […]

App note: Interfacing an I2S device to an MSP430 device

Interfacing an I2S device to an MSP430 device application note (PDF!) from Texas Instruments: The MSP430 series of microprocessors are fast powerful devices ideally suited for use with the various wireless transceivers offered by Texas Instruments. In streaming audio applications, however, it is desirable that the microprocessor support an audio bus to allow for interconnection to an audio […]

App note: Using the Microchip Ultra Low-power Wake-up module

An application note (PDF!) from Microchip on using the Ultra Low-power Wake-up module to reduce system current consumption: This application note describes ways to reduce system current consumption with the use of the Ultra Low-power Wake-up (ULPWU) module. The PIC16F684 and PIC16F88X are examples of deviceswith this feature. The primary use of this module is as an […]

App note: Creating a custom flash-based bootstrap loader (BSL)

An application note (PDF!) from TI on creating a custom flash-based bootstrap loader (BSL): MSP430F5xx and MSP430F6xx devices have the ability to locate their bootstrap loader (BSL) in a protected location of flash memory. Although all devices ship with a standard TI BSL, this can be erased,and a custom made BSL can be programmed in its […]